Round vapor-burner for heating and lighting purposes.



C. BLANKENBURG.

ROUND VAPOR BURNER FOR HEATING AND LIGHTING PURPOSES. APPLICATION FILEDSEPT. 16, 1907 1,01 5,988. Patented Jan. 30, 1912.

3 SHEETS-SHEET 1.

llllllIlllllllllllllllflh G. BLANKENBURG.

ROUND VAPOR BURNER FOR HEATING AND LIGHTING PURPOSES.

APPLICATION FILED SEPT.16,1907.

Patented Jan. 30, 1912 3 SHEETS-SHEET 2.

2 1w e 2 W W Z 2n f i y m C. BLANKENBURG.

ROUND VAPOR BURNER FOR HEATING AND LIGHTING PURPOSES.

APPLICATION TILED SEPT.16, 1907. v 1,015,988. Patented Jan. 30, 1912.

3 SHBETSSHEBT 3.

UNITED STATES PATENT OFFICE. I

CARL BLANKENBURG, on LEIPZIG-SELLERSHAUSEN, GERMANY, AssIGNon'ro cori-PANY HUGO SCHNEIDER AKTIENGESELLSCHAFT, or LEIPZIG, GERMANY.

ROUND VAPOR-BURNER FOR HEATING AND LIGHTING PURPOSES.

Specification of Letters Patent.

Patented Jan. 30, 1912.

Application filed September 16, 1907. Serial No. 393,031.

German Empire, have invented certain new and useful Improvements inRound Vapor- Burners for Heating and Lighting Purposes,

of which the following is a specification.

The present invention relates to improve- .ments in the construction ofround vapor burners principally for use in incandescent oil lamps. Inlamps of the kind a noticeable objection is that the tubes surroundingthe wick become unduly heated after the lamp has been burning for atime.

The object of the present invention is to provide effective means forpreventing the transmission of heat from the flame to the wick tubes.This result is accomplished by providing a perforated tube disposedoutside of the outer wick tube so that air can freely circulate betweenthis perforated tube and the outer wick tube while the upper edge ofthis perforated tube is bent inward close to the exterior cylindricalsurface of the wick to come in contact with the wick a short distanceabove the ends of the wick tubes. By thisarrangement the flame'isprevented from creeping down the external surface of the wick andcontacting with the wick tubes. The arrangement of the perforatedprotecting tube described is such that transmission of heat from thisprotecting tube to the outer wick tube is practically prevented.

The invention is illustrated in the accom panying drawings by way ofexample.

In these drawings Figure 1 is a vertical sectional elevation, Fig. 2 isa sectional plan,

on the line I-I of Fig. 1, Figs. 3-7 are vertical sectional elevationsshowing modified arrangements of the protecting tube according to thepresent invention, Fig. 8 is a vertical partially sectional elevation ofa slightly modified form of vapor burner and Fig. 9 is a section on theline.99 of Fig. 8.

,In carrying the invention into effect according to the form shownthe'burner body a is arranged to carry the two concentric wick tubes 12and .0 and the outer perforated gallery d. Within the gallery d there issupported the usual burner cap j which is provided at its upper end witha circular ope-ning through which there projects the perflange Z1.carried on a perforated tubeforated spreader k. The wick j is arrangedbetween the concentric wick tubes 6 and 0 and the upper end of the wickafter it leaves the wick tubes 6 and c is guided by a which forms theprotecting tube according to the present invention. The flange h in theform illustrated is produced by bending inwardly the perforated tube 9and this flange is provided also with perforations Z. On the outside ofthe tube 9 there is arranged a ring m which projects above' the plane ofthe flange h and forms a gagefor determining the highest point towhichthe wick y should be screwed. The flange h is preferably provided with afrusto-c-onical wick guide 5 widening downward so as to facilitate theentrance of the wick y when it is screwed upward.

According to the arrangement described the flame starting from the wickis prevented from coming into contact with the wick tube 6 because theflange or ring it prevents the flame from creeping downward .owing tothe said ring it contacting with the outer surface of the wick below itsupper edge and above the upper edge of the outer wick tube 6. Further byproviding the tube 9 with perforations air which is fed to the burnercirculates through the perforations of the tube 9 and the perforations Zin the ring or flange h and thereby the ring and tube are kept cool.Experi ments with this construction of burner have shown that byproviding a ring m the vaporization of the oil proceeds much morequickly than if the ring m is dispensed with. This is probably owing tothe amount o f-heat adapted'to be accumulated and given up by the ringm. I In Fig. 1 the form of the protecting tube 9 is clearly shown and,as will be seen, it is of frusto-conical form, tapering toward its upperend, and is turned inwardly to form the flange h which carries thefrusto-conical wick-guide z, the tube 9 being secured to the burner bodyby means of screws or the like passing through a flange (not shown) onthe lower end of the tube 9.

Fig. 3 shows a slightly modified form of the protecting tube, whichlatter is there designated by g and is shown of slightly lower end bymeans of which it may be fastened by screws to the burner body. Thiscurved tapered form with a flange g on its,

construction may, however, be considerably modified, as, for instance inFig. 4, where a protecting tube 9 is shown formed with a stepped upperflange h perforated at Z and carrying the wick guide i.- As shown atFig. 5, the protecting tube 9 may, if desired, be of stepped formationand the upper flange be formed with a bevel 72. perforated at Z and astep 7L3 carrying the wick guide 2' Furthermore, as shown in themodification in Fig. 6, a cylindrical protecting tube 9 may be providedhaving a turned-in flange h and wick-guide i the lower flange of thetube being dispensed with and the tube g being brazed or otherwisesecured to the burner body.

In the modification shown at Fig. 7 the' protecting tube 9 is shown inone with the burner cap f and is tapered upwardly, but in this case theupper flange and wick-guide are dispensed with, the upper edge of thetube 9 forming the wick-guide and contacting with the wick j.

A modified form of the burner according to the .-present invention isillustrated in Figs. 8 and 9. In these figures the ring on in Figs. 1and 2 is replaced by a tube m which is supported on a conical part nheld between the gallery d and the burner body a. The ring m issupported clear of the outer surface of the perforated protecting tubeg. The upper end of ti hood m forms a ring around the upper end of theprotecting tube 9 and projects above the flange it so as to form thegage for the highest position to which the wick should be screwed. Itwill be seen in Fig. 8 that the conical part n is perforated so as topermit the passage of the .air for supporting combustion within the capor air su'ction cover f. 1 The hood m in Figs. 8 and 9 differs from thering m in Figs. 1 and 2 by being separated from the tube 9 by an airspace. In this way the heating of the upper end of the hood m does notinterfere with the cooling of the protecting or isolator tube 9. a

I claim 1'. A vapor burner comprising an inner and outer wick tube, avertically adjustable wick between said tubes, a frusto-conical guidefor said wick, said guide terminating above the upper edge of said outerwick tube and being adapted to contact with the ex-' ternal periphery ofthe wick below the upper edge of the wick, and a perforated tubularsupport for said guide.

2. A vapor burner comprising an inner and-outer wick tube, a verticallyadjustable wick between said tubes, a frusto-conical guide for saidwick,said guide terminating above the upper edge of said outer wick tube andbeing adapted to contact with the wick,

and a perforated supporting tube having an in which the upward flow ofair is throttled and diverted in the flaming portion of said wick, and aring projecting above the said perforated tube and forming a gage forthe wick.

4. A vapor burner having in combination, an outer and an inner wicktube, a wlok between said tubes, a perforated isolator tube disposedaround the outer wick tube and through the perforations in which the airfor combustion passes, a flange on said perforated tube projectinginwardly and adapted to contact with the outer cylindrical surface ofthe wick at-a point below the upper end of the wick and above the upperend of the outer wick tube and a ring projecting above the level of thesaid flange and encircling the exposed part of the wick.

In witness whereof I have hereunto set my hand in the presence of twowitnesses.

CARL BLANKENBpRe.

Witnesses Ennsr Bonnnnnnenn, RUDOLPH Fmcxn,

